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TYPE WRITING MACHINE.

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TYPE WRITING MACHINE.

No. 531,904. Pate ted 1 1895..

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T. GAHILL. TYPE WRITING MACHINE.

No. 531,904. Patentad Jan. 1, 1895 m Model) 1': Sheets-Sheet 5. T. CAHILL.

TYPE WRITING MAGHINE.

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T. GAHILL. TYPE WRITING MACHINE.

No. 631,904. Patented Jan. 1, 1895.

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(No Model.) 17 Sheets-Sheet 7.

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TYPE WRITING MACHINE.

No. 531,904. Patented Jan. 1, 1895.

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17 Sheets-Sheet 9. T. GAHILL. TYPE WRITING MACHINE.

' No. 531,904. Patented Jan. 1, 1895.

(No Model.) 7 17 Sheets-Sheet 10.

T. OAHIL'L.

TYPE WRITING MAUHINE.

No. 531,904. Patented Jan. 1, 1895.

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No. 531,904. Patented Jan 1, 1895.

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TYPE WRITING MACHINE N0. 563L904. Patented Jan. 1, 1895.

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TYPE WRITING MACHINE.

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TYPE WRITING MACHINE.

.No. 531,904. Patented Jan. 1, 1895, J

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Patented Jan 1895.

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I T. OAHILL. TYPE WRITING MACHINE.

Patented Jan. 11 6895.

UNITED STATES PATENT EErc TIIADDEUS CAIIILL, OF \VASHINGTON, DISTRICT OF COLUMBIA.

TYPE-WRITI NG MACHINE.

SPECIFICATION forming part of Letters Patent No. 531,904, dated January 1, 1895.

Application filed September 24, 1892. Serial No. 446,992. (No model.)

To ctZZ whom it may concern.-

Be it known that I, THADDEUS CAHILL, a citizen of the United States, and a resident of Washington, in the District of Columbia, have invented certain new and useful Improvements in Type-\Vriting Machines, of which the following is a specification.

The object of my invention is to increase the ease and rapidity with which such machines may be operated: and my invention consists in the parts, improvements and combinations hereinafter described and claimed; but, while referring to the statement of claims at the end of this specification for a formal and definite statement of my invention, I wish here to say briefly that my present invention relates to means for writing two letters simultaneously, and consists in a certain improved type-form, and in the arrangement and combination of the type-form, type-form positioning mechanism and carriage spacing mechanism. As, however, all the details of construction of a type-writer depend upon, and are governed in a great degree by, the arrangement of the type-form and type-form positioning mechanism, I have for the sake of greater clearness and certainty, illustrated and described a complete machine. It will be understood, however, that my invention relates solely to the type-printing mechanism, and to the manner and means of positioning the characters and the printing carriage.

The mechanism herein shown anddescribed in illustration of my invention may be briefly said to consist of (a) a suitable papercarriage capable of holding two sheets of paper side by side, or a double sheet of paper, and spacing mechanism for moving such paper carrings; (6) two type-forms, each arranged to play to its own printing point, each arranged to move in two different planes or arcs for the purpose of bringing the character or characters to be printed to the printing point, and each having one or more groups of single characters, (that is, groups of characters from which but one character is printed at a time,) and a plurality of groups of double or compound characters (that is, groups of charactors so arranged that two characters or a double character as an, d, print simultaneously); (0) keys for the right hand-and suitable mechanism interposed between them and the type-forms serving to control the motions of the type-form in one of the arcs or planes before mentioned; ((1) keys for the left hand, and suitable mechanism interposed between such keys and the type-forms serving to control the movements of the type-forms in the other one of the arcs or planes before mentioned; (6) suitable inking mechanism; (f) suitable impression mechanism for printing the characters brought to the printing point; (g) a singlespace key for moving the carriage a single space; and (h) a double-space key for moving the carriage two spaces at a time, so that an inter-verbal space may be made at the same time that a letter is printed. It will be understood, however, as before said, that my invention relates only to the type-printing mechanism and to the manner and means of positioning the characters and the /paper carriage; and that the various collateral matters described, such as the inkingeribbon mechanism, the impression mechanism, the paper carriage impelling mechanism and the paper carriage itself, are all of them old in so far at least as this present application is concerned, that they form no part ofthe subject matter of this application, and are in nowise claimed herein. Onthe one hand, no special importance is attached to them. On the other, I do not confine myself to them. They are shown simply to enable an ordinary mechanic skilled in the art, to embody my invention in an operative machine, without having to contrive anything himself.

For moving the type-forms I use movement synthesizer or movement aggregating devices controlled by a small number of keys and serving to determine numerous different motions of the type-form when different keys or combinations of keys are depressed. Such mechanism, however, while forming an essential element of certain of the combinations hereinafter described and claimed, does not by itself alone form any part of my present invention; but constitutes the subject matter of a prior application, filed May 5, 1892, Serial No. 431,869, (issued August 8, 1893, as Patent No. 502,700.)

In the accompanying drawings, Figures 1, 2, 3 and 4, are the general views,Fig. 1 being a top view of the machine; Fig. 2, a front elevation; Fig. 3, a rear elevation, illustrating the mechanism at the back of the machine, the carriage, spacing mechanism, ribbon feed mechanism and carriage motor mechanism not being shown, and Fig. 4 a sectional view, partly in elevation, on the line 00, (1;, Figs. 1 and 2. Figs. 5 to 24, inclusive, are detail views. Fig. 5 is a sectional view, partly in plan, on the line a:-0c, Fig. 3, illustrating, the arrangement of the keys and the space frames. Fig. 6 is a top view of the bed plate and back of the main-frame, the back being shown partly in section. Fig. 7 is a rear elevation, illustrating the back of the main-frame. Fig. 8 is a side elevation of the main-frame. Fig. 9 is a front elevation of the type-forms and their mountings. Fig. 10 is a sectional view, seen from the rear, partly in elevation, in a plane parallel to the plane of the preceding figure, and through the center of the type-forms there shown. Fig. 10 is a detail view, on a larger scale than the preceding figure, illustrating more clearly a part of the mechanism shown in the preceding figure. Fig. 10" is a cross-section on the line a, a, Fig. 10. Fig. 11, is a sectional view partly in elevation, on the line, y, y, Fig. 9. Fig. 12 is a rear view in elevation of the carriage and spacing mechanism. Fig. 12 is a detail view on a larger scale than the preceding figure, illustrating more clearly the spacing mechanism shown in the preceding figure. Fig. 12 is a detail View in perspective, illustrating the carriage-frame and the spacing rack, viewed from in front. Fig. 12 is a sectional View, partly in elevation, through the carriage-frame, onthe line I), b, Fig. 12. Fig. 12 isa detail view, partly in elevation, partly in section, in a plane parallel to the plane of Fig. 12, and on a larger scale than Fig. 12, illustrating the pressure rollers hereinafter described, their hangers and mode of connection with the main-frame of the carriage. Fig. 13 is an end elevation of the carriage and spacing mechanism. Fig. 13 is a detail view of the spacing mechanism represented in the preceding figure, on a larger scale than Fig. 13, and viewed from the opposite direction. Fig. 13 is a cross-section on the line as, Fig. 13. Fig. 14 is a sectionalview in elevation on the line 1, 1, Fig. 3. Fig. 14" is a detail top View, illustrating a portion of the mechanism represented in Fig. 14. Fig. 14 is a detail sectional view, partly in plan, in a plane transverse to the plane of Fig. 14, the line of section being midway between the parts 70' and 75 Fig. 14. Fig. 14 is a detail view on a larger scale than Fig. 14, illustratinga portion ofthe mechanism shown in that figure. Fig. 14 is a perspective detail also on a larger scale than Fig. 14,illustrating one of the stops shown in that and otherfigures. Fig. 15 isasectional view in elevation on the line 2, 2, Fig. 3. Fig. 15 is a detail top-view, illustrating a portion of the mechanism represented in Fig. 15. Fig. 16 is a detail sectional elevation in a plane transverse to the plane of Fig. 14 and upon a line immediately to the right of the parts If and 13 Fig. 14, looking toward the back of the machine. Fig. 17 is a similar view in a plane transverse to the plane of Fig. 15, the line of section being immediately to the left of the parts Z2 and 2, Fig. 15, looking toward the back of the machine. Fig. 18 is likewise a detail sectional elevation, in a plane transverse to the plane of Fig. 14, the line of section being immediately to the left of the parts 19 and 19 Fig. 14, looking toward the front of the machine. Fig. 19 is a similar view in a plane transverse to the plane of Fig. 15, the line of section being immediately to the right of the parts, 2 and z, Fig. 15, looking to the front of the machine. Fig. 20 is a detail sideelevation, illustrating the carriage motor mechanism. Fig. 20 is a detail front elevation, illustrating the ribbon spool mechanism, and the manner in which it is connected with the carriage motor mechanism. Fig. 21 is a rear elevation of the carriage motor mechanism. Fig. 22 is a detail front elevation of the same. Fig. 23 is a sectional elevation in a plane parallel to the plane of Fig. 20, through the center of the mechanism illustrated in Fig. 20. Fig. 24 is a cross-section in a plane parallel to the plane of Figs. 21 and 22, through the center of the part L Fig. 20; and Fig. 25 is a detail rear elevation of the type-form, drawn to a larger scale than the other figures, illustrating the arrangement of compound or double-letter characters thereon, said characters being represented, for the sake of clearness, naturally as they print,instead of being shown inverted as they are formed on the type-form.

In many of the views parts which would be seen in actually looking at the machine have been omitted in order to avoid obscuring other parts which it was more important to illustrate. In particular the arrangement of links and levers illustrated in Figs. 14, 15, 16, 17, 1S and 19 have been omitted from Figs. 1, 2, 3 and 4.

The aim has not been to represent the ma chine in each view with photographic accuracy, but to make clear'the essential features and principles of construction.

The mainframe-{See particularly Figs. 5, 6, 7 and 8.) The frame of the machine is made of cast-iron or other suitable material. Its principal parts are a bed-plate; aback; and two side-pieces, serving to support the carriage-rails hereinafter mentioned, and to bind the back and bed-plate together more firmly. To these larger parts many smaller ones are attached, as will be made clear hereinafter. The bed-plate is cast in one piece. It consists of a front rib, A; a horizontal, key-supporting rib, A, lying parallel with the front rib and some distance behind it; side ribs, A and A lying at right angles to the ribs, A and A, and in the same horizontal plane as the rib,A; central connecting ribs, A A lying parallel with the ribs, A and A and a backwardly extending rib, A lying parallel with the ribs, A A and A, above mentioned,

IIO

. A, A and A porting-rib, A.

and in the same horizontal plane therewith. A short vertical standard or upright, A projects from the side-rib,A immediately above the key supporting rib, A. Said part, A serves to form a bearing or support for one of the rock-shafts hereinafter described. The side ribs,A and A are furnished at their ends remote from the front rib, A, with inwardly facing projections, a, a, at right angles to said ribs, A and A and parallel with the ribs, A and A; and the rib, A is provided with similar extensions, 0., a, all which serve to connectthe bed-plate of the machine with the back. The back of the main-frame is also cast in one piece, and consists of a lower rib,'

A and an upper rib, A (both of which lie parallel with the front rib, A, and key-supporting rib, A, before mentioned and vertical ribs, A A A A and A, parallel 'with each other, connecting the upper and lower ribs, A and A, and lying at right angles to said ribs, A and A and to the ribs, A,

before mentioned. The vertical rib A is furnished with small arms or projections A A A (210., which serve to hold certain stops A hereinafter described, by which the movement of the right hand set of keys is limited and determined. The vertical rib A in like manner, is furnished with similar armsor projections A A A A, which serve to hold stops A by which the movement of the left hand set of keys is arrested. The ribs A and A respectively, are furnished with corresponding arms or projections, A and A, which serve to support the rock-shaft E, hereinafter described. The back is attached to the bed-plate by bolts A A &c.,that bind the lower rib A of the former to the the latter.

The side-pieces A and A 9, of the mainframe, are castings, having each a lower horizontal part or foot; a vertical or upright part; and an upper, horizontal, backward extending part. The lower horizontal part or foot is secured by bolts, A A to one of the side ribsof'the bed-plate; and the upper," horizontal, backward extending part, is secured by a bolt, A to the upper, horizontal rib, A of the back piece. Thus the back piece, bedplate, and side pieces are firmly bound to gether.

A casting A, of the form shown in the drawings, (see particularly Figs. 2, 8, 9, and 10,) is attached by bolts A to the key-sup- Said casting A serves as a bearing for the horizontal shafts upon which the type-form sleeve-bearings hereinafter described are mounted. It serves also as a bearing for the r0ck-shat't, hereinafter described, by which the type-form sleeves are rotated.

A casting A of the form illustrated in the drawings, (see particularly Figs. 1, 2 and 20 is attached by bolts, A A to the ribs A A. Said casting, A serves as a bearing for the horizontal ribbon-feed shaft, hereinafter projections a, a, a a'nd a, of

tical ribbon shafts, hereinafter described.

A casting A, of the form illustrated in the drawings, (see particularly Figs. 1, 2, 20, 20, and 23,) is attached by bolts, A, A, to the side-rib, A It serves to support one end of the shaft upon which the wheel that moves the carriage is mounted; and also to support one end of the ribbon-feed shaft, hereinbefore mentioned and hereinafter described.

A casting A ofthe form illustrated in the drawings, (see particularly, Figs. 1, 2, and 21,) is attached by machine screws, A A flto the side piece, A Said casting, A serves as a journal or hearing for a sleeve, in which bearwheel that moves the carriage is mounted.

A casting A, of the form shown inthe drawings, (see Figs. 1, 3, 4, S, and 11,) is attached by belts or machine screws, A A to the vertical rib, A of the main-frame back. Said casting, A serves to support the centerscrews by which the printing-lever, hereinafter described, is mounted.

A casting, A, of the form illustrated in the drawings (see Figs. 2, 4, 8, 12, 12 13, and 13), is attached to the backward extending rib, A of, the bed-plate, by beltsor machine screws, A A Said casting, A serves to support the levers on which the space dogs hereinafter described, and certain other parts of the letter spacing mechanism hereinafter described, are mounted.

A casting, A of the form illustrated in the drawings, (see Figs. 1, 2, 4, 9, and 10,) is attached to the top of the casting, A, by machine screws. Said casting, A serves to form a bearing for certain little ribbon pulleys hereinafter described.

Track for the paper-carriage.($ee Figs. 1, 2, 4,and S.) The track for the paper-carriage torun'iipon is formed by parallel metal rails, 19 and b, which are attached to the side pieces, A and A, by bolts and nuts, b' and b The paper-carriaga-(See Figs. 1, 2, 4, 12, 12, 12212, and 13.) The paper-carriage is adapted and arranged to carry and hold in place to be printed on, two sheets of paper, arranged side by side. A

A paper carriage is an element pf some of the combinations herein described and claimed;but the paper carriage is not claimed herein by itself alone; nor is any special im portance attached, so far as this specification isconcerned, to the peculiar form of paper carriage illustrated herein. Such paper carriage forms a part of the subject matter of another application of even date herewith, Serial No. 446,991.

The paper carriage, as illustrated,consists, in its most essential elements, of a carriageframe; an impression cylinder, around which the paper passes, and against which the typeforms strike, when the letters and other charactors are printed; smaller pressure rollers,

and elastic bands running on pulleys and ing the before-mentioned shaft on which the I described; and also as a bearing for the ver- IOO 

